Re: [development] Switching themes in modules

@all - the right way to add a custom stylesheet from a module is theme_add_style().

TDobes offers convincing arguments that we should instead use <?php // Modules should do: drupal_set_html_head(theme('stylesheet_import', base_path() . drupal_get_path('module', 'mymodule') .'/mymodule.css')); ?> see http://drupal.org/node/52508#comment-79259